Interface Configuration
7710 SR OS Interface Configuration Guide
Page 65
APS Channel and SONET Header K Bytes
The APS channel (bytes K1 and K2 in the SONET header) is used to exchange APS protocol
messages for all APS modes.
K1 Byte
The switch priority of a request is assigned as indicated by bits 1 through 4 of the K1 byte (as
described in the rfc3498 APS-MIB).
The channel requesting switch action is assigned by bits 5 through 8. When channel number 0 is
selected, the condition bits show the received protection channel status. When channel number 1 is
selected, the condition bits show the received working channel status. Channel values of 0 and 1
are supported.
Table 16: K1 Byte, Bits 1-4: Type of Request
Bit 1234
Condition
1111
Lockout of protection
1110
Force switch
1101
SF - High priority
1100
SF - Low priority
1011
SD - High priority
1010
SD - Low priority
1001
(not used)
1000
Manual switch
0111
(not used)
0110
Wait-to-restore
0101
(not used)
0100
Exercise
0011
(not used)
0010
Reverse request
0001
Do not revert
0000
No request
Содержание 7710 SR SONET
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Страница 8: ...Page 8 7710 SR OS Interface Configuration Guide List of Tables...
Страница 10: ...Page 10 7710 SR OS Interface Configuration Guide List of Figures...
Страница 14: ...Preface Page 14 7710 SR OS Interface Configuration Guide...
Страница 16: ...Getting Started Page 16 7710 SR OS Interface Configuration Guide...
Страница 18: ...Page 18 7710 SR OS Interface Configuration Guide Configuration Notes on page 107...
Страница 166: ...Service Management Tasks Page 152 7710 SR OS Interface Configuration Guide...
Страница 354: ...Multi Chassis Redundancy Commands Page 328 7710 SR OS Interface Configuration Guide...
Страница 494: ...Standards and Protocols Page 494 Standards and Protocols...
Страница 496: ...Index Page 496 7710 SR OS Interface Configuration Guide...